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The Chemical Bond in Inorganic Chemistry$
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I. David Brown

Print publication date: 2016

Print ISBN-13: 9780198742951

Published to Oxford Scholarship Online: November 2016

DOI: 10.1093/acprof:oso/9780198742951.001.0001

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Electronically Distorted Structures

Electronically Distorted Structures

Chapter:
(p.107) 7 Electronically Distorted Structures
Source:
The Chemical Bond in Inorganic Chemistry
Author(s):

I. David Brown

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198742951.003.0007

The spherical symmetry of the negative charge surrounding the nucleus of an atom is largely preserved even on bond formation (Section 2.3.1), but the presence of non-bonding ‘lone pairs’ (Section 7.3) in the valence shell may lead to an asymmetric bonding geometry. The distribution of bonding and non-bonding charge in the valence shell is determined by the bonding strength of the neighbouring atoms in ways that both confirm and extend the VSEPR model (Section 7.3). Electronic distortions are found in the environments of some transition metals, e.g. Jahn-Teller effect. (Section 7.4). Distorted coordination spheres can be modelled using either a multipole expansion (Section 7.2.1), bond fluxes (Section 7.2.2) or bond valence vectors (Section 7.2.3).

Keywords:   lone pairs, VSEPR, Jahn–Teller, electronic distortion, bonding strength

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